stateDirectory, "*.handle")) {
            for (Path handleFile : stream) {
                try (ObjectInputStream ois = new ObjectInputStream(
                        Files.newInputStream(handleFile))) {
                    HandleInfo info = (HandleInfo) ois.readObject();
                    
                    // Only load if not expired
                    if (!info.isExpired()) {

     * @throws FessSystemException if the properties file cannot be parsed.
     */
    protected void parseProjectProperties(final Path propPath) {
        try (final InputStream in = Files.newInputStream(propPath)) {
            final Properties prop = new Properties();
            prop.load(in);
            version = prop.getProperty("fess.version", "0.0.0");
            final String[] values = version.split("\\.");